“This calculator is useful only for calculating the tensions and diameters of strings made of homogeneous material!

The mathematics and measuring for ex. wound strings is much more complicated, and is not included in the possibilities of my calculator. The calculator is programmed as a Java applet. That means that your browser must enable Java. Very early versions of Java are not supported.

The basic use of the calculator is:

Set the note and tuning properties.

Set the string properties.

Now there are two basic ways:

Set some diameter of a string and calculate the tension. This is useful for example, when you want to know "Can I use this string for that course?"

Set some tension of a string and calculate the diameter. This is useful, for example, if you already know that some string feels good, and you want to find out, what diameter to use to get the same tension for some other course and note.“

Visit website for more information. (Java is needed to run the Calculator) (ed.)

Cleartune is a chromatic instrument tuner and pitch pipe that allows you to quickly and accurately tune up using the built-in mic in your iPhone.

Cleartune features a unique "note wheel" interface allowing you to quickly find your pitch, paired with a highly responsive fine-tuning meter for the perfect tune.

Don't let its clean design and simple interface fool you. With support for custom temperaments, transposition, notations such as solfège, adjustable calibration and more, Cleartune packs enough power for the pro, yet is simple enough for everyone to use.

Cleartune can tune acoustic or electric guitar, bass, bowed strings, woodwinds, brass, piano and any other instrument that can sustain a tone.“